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Alpha Bedding Co. Theta Premium Mattress

Price range: £459.99 through £539.99

-18%
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Estimated delivery: 19/01/2026 - 23/01/2026
Alpha Bedding Co.
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Free UK delivery on all orders over £300

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30cm Mattress Depth
FIRM Support

Pocket Spring Mattress with premium antibacterial and skin sensitive soft fabric, and Pillow-Top layer that consists of high desnity durable Soft foam layer with double layers of comfort foam in quilt and an additional high density support foam. it’s springs positioned in separate bags which allows couples to sleep in peace and comfort without feeling much movement of one another. The Theta Premium Mattress is one of Alpha Bedding co best selling mattresses.

Alpha Bedding Co. Theta Premium 12″ Mattress

For a truly comfortable and supportive night’s sleep, the Alpha Bedding Co. Theta Premium 12″ Mattress combines the right layers with advanced spring support and premium comfort materials. Designed for sleepers who prefer a firmer feel with enhanced stability, the Theta Premium delivers excellent pressure relief, spine alignment, and long-lasting performance.

With its robust construction and breathable design, this mattress is ideal for those seeking dependable support without compromising comfort.


Advanced 12-Layer Comfort System

The Theta Premium Mattress features a meticulously engineered multi-layer structure to ensure comfort, durability, and consistent support:

  1. Premium Knitted Fabric
    A soft, luxurious outer cover that provides a comfortable and breathable sleeping surface.

  2. Thermobond Fiber
    A supportive layer that helps maintain the mattress’s shape and overall structural integrity.

  3. Super Soft Roll Foam Layers
    Adds plush comfort and softness, gently cradling the body for enhanced sleep comfort.

  4. Non-Woven Fabric
    Improves durability and flexibility while promoting airflow for a cooler, more hygienic sleep.

  5. High Density Soft Foam Layer
    Dense foam that delivers plush comfort and effective pressure relief.

  6. High Resilient Foam Layer
    Provides durable, responsive support and contributes to the mattress’s longevity.

  7. Foam Layer
    Offers balanced support while adapting to body contours for improved comfort.

  8. Foam Layer
    An additional support layer that enhances pressure distribution and body alignment.

  9. Pocketed Coil Spring System
    Individually wrapped pocket springs provide targeted support, reduce motion transfer, and promote undisturbed sleep.

  10. Foam Encasement
    Reinforced foam edging surrounds the spring unit, enhancing edge support and overall mattress stability.

  11. Felt Layer
    Adds extra padding and acts as a buffer between the comfort layers and the spring core for increased durability.

  12. Bottom Quilt
    The foundational layer that supports the entire mattress structure and ensures long-term stability.


Comfort & Performance Features

  • Firmness Level: 5.0 (Firm)
    Ideal for sleepers who prefer strong, supportive comfort

  • Pocket Spring Support – Targeted body support with reduced partner disturbance

  • One-Sided Design – No flipping required; rotate periodically

  • Spine Support – Helps maintain healthy spinal alignment

  • Breathable Construction – Promotes airflow for temperature regulation

  • Heat Balance & Moisture Management – Supports a comfortable sleeping environment

  • Antibacterial Properties – Helps maintain a cleaner, fresher sleep surface

  • High Density Sponge – Enhances durability and pressure relief

  • Hyper Comfort Sponge – Adds additional comfort and cushioning

  • Siliconized Fiber – Improves airflow, softness, and resilience


Why Choose the Alpha Bedding Co. Theta Premium Mattress?

  • Ideal for back and combination sleepers

  • Firmer feel for enhanced support and posture alignment

  • Strong edge support for full mattress usability

  • Reduced motion transfer thanks to pocket springs

  • Durable, premium materials designed for long-term performance


The Alpha Bedding Co. Theta Premium 12″ Mattress is the perfect choice for sleepers who want firmer support, advanced comfort layering, and reliable quality—night after night.

 

30cm Mattress Depth
FIRM Support

We won’t’ be beaten on price!

Did you find a better price somewhere else? We’ll gladly price match the competition.

And of course, by shopping with us you get the benefit of our expertise.

Price Match conditions:

1. Our Price Promise applies to any competitor in the mainland UK, including UK websites but excluding factory outlets, membership clubs, duty free shops, home shopping channels, other auction sites, market stalls, private sales and liquidation (or any other “closing down” or insolvency) sales.

2. The product must be new, identical in style, specification, size and colour, and offered on the same terms.

3. The competitor store or website must have the product in stock and available for immediate purchase or delivery.

4. Gift vouchers, voucher codes and cash back are exempt.

5. Typographical errors shall not apply. No affiliate, promotional, voucher code or media discount applies. Any other retailer’s price match promotion which offers an additional rebate or other benefit for any price matched product is also excluded.

6. We must be able to verify the competitor’s price and stock position to our satisfaction.

7. The price being matched must include all taxes (including VAT), postage and packing charges as applicable.

8. All Price Promise transactions are carried out at our discretion.

9. We reserve the right to withdraw this Price Promise at any time.

Additional information

Size

3'0 Single (90cm), 4’0 Small Double (120cm), 4'6 Double (135cm), 5'0 King Size (150cm), 6'0 Super King Size (180cm)

30cm Mattress Depth
FIRM Support

PLEASE ENSURE THAT YOU PROVIDE US WITH A DAYTIME TELEPHONE NUMBER AS WE NEED TO CALL YOU TO ARRANGE YOUR DELIVERY

If your item is in stock you can have this delivered on a FREE next working day delivery if ordered before 4pm or alternatively choose another day that suits you if that is not convenient*

For all large items, we can arrange a 2-man room of choice service with the items unpacked if required and all packaging removed. Please contact us for further information.

Our delivery partner will contact you the evening prior to your chosen day of delivery with a 2 hour time slot and a further call is made on the delivery on the day itself.

Please note that if you require our Remove & Recycle or disposal service, we cannot offer next-day delivery. Please contact us for further information.

For single mattresses (2’6 or 3′), Vacuum packed or rolled mattresses and smaller items such as pillows we also offer a next day service but this is a one man delivery to the door only.

Orders placed after 4pm will be available for delivery within 2 working days.

Deliveries are made Monday to Friday as standard, a Saturday delivery is available on either the one man or two man service for an additional £30.00

If the item is not available from stock or is made to order there are delivery lead times on the specific product. Once the item is available for delivery we will contact you to arrange a convenient day.

Please note that the delivery price stated (where applicable) is for Mainland UK only.

Delivery to Scottish Highlands, Grampians, Southern and Northern Ireland, Isle of Man and the Isle of Wight is available but will incur additional delivery charges.

Additional services such as assembly is available on certain items. We are here to help so please contact us for further information or alternatively call (0800) 614 172 or (01529) 301919

Mon – Sat 9am-5.30pm Sun 10am-4pm.

*certain product categories are subject to a minimum order value of £299.00

30cm Mattress Depth
FIRM Support

Understanding that reliability and peace of mind are vital to our customers, we provide a comprehensive manufacturer’s guarantee on all our mattresses, upholstered beds, and headboards.